Skill Developer

This is the meta-skill for building Claude Code skills themselves. It walks you through the whole system: creating SKILL.md files with proper YAML frontmatter, configuring triggers in skill-rules.json (keywords, intent patterns, file paths), choosing between block/suggest/warn enforcement, and working with the two-hook architecture (UserPromptSubmit for suggestions, plus gentle post-response reminders). The guide covers Anthropic's 500-line rule and progressive disclosure pattern, plus practical stuff like session tracking to avoid nagging and skip conditions when you need an escape hatch. If you're writing custom skills or debugging why one isn't activating, this has the complete reference and testing commands.